New to Metricly? Use this page as an overview for the features related to Alerts, Events, Policies, and Notifications. For a more technical walkthrough on each, see our related articles. Alerts Alerts are a continuous series of events. They group anomalous behavior and enable you to view open (active) or closed (inactive) incidents. The Open Policies list is the first you see when navigating to the Alerts menu. This list is updated every 30 seconds.